Thread waxing device and wax pot therefor



1934- J. A. FUSARO 1,969,552

THREAD WAXING DEVICE AND WAX POT THEREFOR Filed July 19. 1932 2 Sheets-Sheet 1 15 jizvwzzar fa e 2 Mara Aug. 7, 1934. J. A. FusARo THREAD WAXING DEVICE AND WAX POT THEREFOR Filed July 19, 1932 2 Sheets-Sheet 2 Patented Aug. 7, 1934 UNITED STATES PATENT OFFICE THREAD WAXING DEVICE AND WAX POT THEREFOR My invention relates to new and useful improvements in thread waxing device and wax pot therefor, and has for its object to provide exceedingly simple and effective devices of this description which may be readily applied to a shoe sewing machine and which will permit the Wax pot to be raised and lowered to and from a heat conveying cover for varying the temperature of the pot to maintain the wax contained in the 1'0 latter in the proper liquid state for application to threads passing through said pot. v

A further object of the invention is to so construct a wax stripper that a thread being drawn through said stripper will be properly stripped of surplus wax, said stripper being entirely of metal so that no rubber or like material comes in contact with the thread.

A further object of the invention is to provide for the use of an electric heating element in such manner that the heat therefrom will be economically transmitted to one side of said pot and to the top of the contents thereof.

With these and other ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawings forming a part of this application, in which:-

Fig. 1 is a perspective of a bracket adapted to be secured to the head of the sewing machine in the usual manner showing a wax pot carried thereby.

Fig. 2 is a detail plan view of the wax pot.

Fig. 3 is a section on the line 33 of Fig. 2.

Fig. 4. is a detail plan view of one of the strippers.

Fig. 5 is a side elevation of Fig. 4.

Fig. 6 is a section on the line 6-6 of Fig. 5.

Fig. 7 is a detail section of the stripper yoke.

Fig. 8 is a vertical section of the lower portion 45 of the bracket and wax pot showing the means of adjustably securing said pot to the bracket.

In carrying out my invention as herein embodied, 10 represents the bracket which is secured in the usual manner to the head of a shoe sewing machine by suitable bolts passing through the lugs 11, 12 and 13, and this bracket has formed on the rear portion thereof an enlargement 14 in which is formed a chamber 15 for the insertion of an electric heating element by which heat is transmitted to the bracket. This bracket has formed therewith a shelf 16 which serves as a cover for the wax pot and for radiating heat to the top of the contents of the pot.

17 represents an apron cast with the bracket and projecting downward therefrom, and this 6 apron has a slot 18 formed therein in which the squared shank 19 of the bolt 20 is fitted to slide but held against rotation.

21' represents the wax pot through which the bolt 20 passes the head of said bolt bearing against the rear surface of the apron and on this bolt is threaded the hand nut 22 so that the wax pot may be firmly bound against the inner surface of the apron as clearly shown in Figs. 1 and 8.

By this arrangement it will be seen that the wax pot may be moved upward toward the cover 16 or downward therefrom and held in any adjustment by screwing up upon the nut 22 or by the removal of the nut and the withdrawal of the bolt 20, the wax pot may be entirely removed from the bracket for cleaning purposes.

As the heat transmitted from the heating element to the bracket heats the cover 16 and the apron 17, the heat from the apron 17 will be conveyed to the contents of the wax pot through one side of the latter, while the contents of the pot will be heated by radiation from the cover, thus providing for the varying of the heat transmitted to the contents of the pot since when the pot is adjusted to within close proximity of the cover, a greater amount of heat will be conveyed to the contents thereof than when said pot is adjusted to any lower position, and this variance of the adjustment of the pot will enable the operator to maintain the wax carried by the pot at the proper consistency for the most advantageous application to the threads passing through the pot as will be readily understood.

Another advantage of the adjustability of the pct relative to the cover is that air may have free access to the pot giving better results than where said wax is entirely confined.

In utilizing a wax pot of this description, two wax strippers are provided, each having a threaded shank 23 for screwing into the threaded hole 24 in the bottom of the pot and the threaded hole 24a in the cover 16 and each of these strippers includes a head 25 having a horizontal slot 26 cut therein for the reception of the stripper die-block 27, said die-block being held in place by the screw 28 passing through the upper portion of the head and threaded into the lower portion thereof so that the die-block may be turned upon its axis to bring any one of the dies 29 formed therein into operative position hereinafter described.

30 represents a yoke which serves as a presser to bear against the thread when being drawn through the die which may be in operative position and this yoke is fitted to slide on that portion of the head indicated at 31 and being fitted between the upper and lower portion of the head is guided in all directions.

32 represents a hollow screw threaded through the portion 31, and in this screw is housed a spring 33 one end of which bears against the yoke thereby forcing said yoke against the die-block as clearly shown in Fig. 6. By adjusting the screw 32 in or out, the pressure of the spring upon the yoke will be varied, and due to this arrangement a constant and predetermined pressure is maintained upon the thread being drawn through the stripper, thereby stripping said thread of the surplux wax to any desired degree.

The dies 29 are of various sizes to correspond with the various sizes of threads used in a shoe sewing machine and by turning the block to bring any one of these notches into a position facing the presser, the size thread being used will be exactly accommodated by the die thereby avoiding any chaffing of the thread.

34 represents a guide eye formed in the spring 35, which spring is held in the wax pot by the ends thereof being sprung into suitable recesses formed in the inner walls of the pot and when one of the threads being used in the sewing machine is passed through this eye it is in a posi tion to readily pass through a suitable bore in the shank 23 and through the hole 36 in the lower portion of the head and through the hole 3'7 in the upper portion of said head.

From the foregoing description, it will be seen that an exceedingly simple arrangement is provided whereby the contents of a wax pot may be heated to various degrees without varying the heat source and a cover provided for the pot so that oil and other foreign matter may not fall into said pot from above and that proper ventilation may be had for the contents of the pot and that wax applied to the threads passing through said pot may be stripped from said thread to any desired degree without the use of rubber plugs.

Of course I do not wish to be limited to the exact details of construction as herein shown, as these may be varied within the limits of the appended claimwithout departing from the spirit of my invention.

-Having thus fully described my invention, what I claim as new and useful is:-

In a device of the character described, a bracket, means for heating said bracket, an apron formed with the bracket, said apron having a vertical slot formed therein, a bolt having a squared shank, said shank fitted to slide in said slot, a head carried by the bolt for bearing against the rear face of the apron, a wax pot through which said bolt extends, said pot adapted to bear against the outer surface of said apron, a. hand nut threaded upon theouter end of the bolt for binding the wax pot against the apron, and a shelf formed with the bracket, said shelf serving as a cover for the wax pot and for radiating heat to the contents of the pot.

JOSEPH A. FUSARO. 

